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Spy Pen

Fail

Prices span $2.37–$13.99, mostly outside the sweet spot, so Spy Pen is a Fail.

Flapen Score
44
44 / 100
Ranks 489 of 835 Stationery & Office Supplies niches · −3 vs the category median of 47
Market size
£42K/yr72K searches / yr
90-day growth
-18.3%search demand this quarter
Competition
58%top-5 click share · 17 brands · 48 sellers

Flapen Score

Spy Pen against its category

The dotted line is the Stationery & Office Supplies average. Past it, Spy Pen is stronger. Inside it, weaker.

44Fail
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Spy Pen market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Spy Pen 72K times last year and spent an estimated £42K. The top 5 brands take 70% of clicks. Demand peaks in Nov–Dec. Flapen scores it 44 out of 100, a Fail.

01 · Demand

8.3% of searches ended in a purchase last week.

Shoppers searched for this 72K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 8.3% of those searches ended in a purchase. Searches in the last 90 days moved -18.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated £42K a year.

Searches, last 12 months
72K
Growth, 90 days vs prior 90
-18.3%
Conversion, latest week
8.3%
Market size, estimated
£42Ka year
Peak month
December2.8× the quietest month
Top search term
invisible ink pen with uv light19K searches a year

02 · Price

A sale here is worth £7.03.

Listings sell for £7.03 on average, from £2.37 to £13.99. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 250 to 500 of them. At £7.03 that is £2K to £4K a year per listing.

Average price
£7.03under the $15 to $100 sweet spot
Price range
£2.37–£13.99
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
6K–8K
Units per listing a year
250–500
Revenue per listing a year
£2K–£4K
Returns
0.5%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

80% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #266 within Pens, Pencils & Writing Supplies. It carries 1,384 reviews at 4.41 stars, so a new listing needs social proof before a better product.

Sponsored listings
80%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#266in Pens, Pencils & Writing Supplies
Average rating
4.41 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,384per listing
Listings tracked
25

04 · Newcomers

Brands here are settling in.

The brands on the shelf have sold for 39 months on average, so the names here are settling in.

Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
39 months

Products

Top Spy Pen products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 58% of clicks. Leaders hold, but buyers still shop past them.

£0£2K£3K£5K£7K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

17 rising

Sellers

48

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

58%

Top 20: 96%

Open market

24%

  • OFFCUP31%
  • Faburo15%
  • Tinc11%
  • Toyseum8%
  • DazSpirit6%
  • SureMark5%

Demand

Spy Pen search demand

Weekly searches over the year, seasonality beneath. Pick a range.

4K3KSpike '24Holiday '24Spike '25Holiday '25SepDecMarJunAugNovMarMay

Peak months: Nov, Dec · busiest ÷ quietest = 2.8×

Search terms

Top Spy Pen search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • invisible ink pen with uv light19K/yr
  • invisible ink pen15K/yr
  • invisible pen9K/yr
  • invisible pen with uv light7K/yr
  • invisible ink6K/yr
  • spy pens for kids7K/yr
  • invisible ink pens for kids3K/yr
  • spy pens4K/yr
  • invisible ink pens3K/yr

Reviews and returns

What reviews say buyers love and hate about Spy Pen

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Functionality-Overall30%−0.15

Didnt work

UV LIGHT DOES NOT WORK

Don't work

Battery Life25%−0.07

battery connection not great

Very shows colors on the notes only downside is it takes batteries would be great if rechargeable

But something with the light doesn't always offer full contact with the pins and batteries so fairly often it dims a lot, rattles and even turns off until I shake it or smack it in the air

Color20%−0.08

all same colour

These are not different colours

Quality-Overall10%−0.03

Terrible quality

Defective Material/Parts10%−0.05

Parts missing

Love

Quality-Overall17%−0.03

good quality

Great product

Such a cool product

Value For Money15%+1.06

Good product worth the money

good value

Good Value

Advertised Vs Actual Product14%+0.94

Does the job

Does what it says it does

does the job

Ease Of Use13%+0.90

Easy to use

Very good, easy to use and with a little torch

Simple to use

Efficiency9%+0.60

Works really well

Works perfectly

Works well

Return

0.5% Return rate 11% Fixable by listing

Functionality-Overall29%█▆▄▂▄▃

Didnt work

UV LIGHT DOES NOT WORK

Don't work

Quality-Overall14%▁▃▃▅▅█

Terrible quality

Defective Material/Parts9%▁▁█▁▃▆

Parts missing

Battery Life8%▁▁▁▅█▁

battery connection not great

Very shows colors on the notes only downside is it takes batteries would be great if rechargeable

But something with the light doesn't always offer full contact with the pins and batteries so fairly often it dims a lot, rattles and even turns off until I shake it or smack it in the air

Size-Overall5%█▁▁▁▁▁

FAQ

Common Spy Pen questions

Answered from the same tracked data.